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What Are UFOs?

Episode number: 1

Overview: After decades in the shadows, UFOs are being studied seriously. Are they weather balloons, optical illusions, secret military technology? Or something else? Follow scientists as they try to unravel the mystery of the strangest objects in our skies.

Extreme Airport Engineering

Episode number: 2

Overview: In New York City, a team of elite engineers and construction workers are on a mission to build the ultimate airport. Follow their ups and downs as they race to build a new, world-class LaGuardia on the site of one of America's busiest aviation hubs.

Dino Birds

Episode number: 3

Overview: Rare fossil discoveries reveal the secrets of bird evolution, and how some feathered dinos became the colorful birds that fill the sky today.

Egypt's Tombs of Amun

Episode number: 4

Overview: Follow archaeologists as they discover a long-lost ancient cemetery in Egypt's sacred desert. Treasures emerge unlike anything seen by the team, revealing details of a unique period when women had remarkable power.